Well it turns out I was mistaken. My Panansonic is also an RV30, not a DV30 as I first reported. And it does work fine with any - format either -R or -R/W but hates +R/W! I have not tried +R though. I often make a trial on +R/W media when I am not sure how something is going to work. So if I want to try it in the Panasonic I have to first copy it to a - format disc. But I also have several A04's and an A05 at home so that is not a problem. I like to use the Panasonic for a test case figuring if it works on it then it should work on any player.
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I don't give away or sell DVD's but occasionally someone in my family will want to borrow one. It is embarrassing for them to later tell me "It didn't work"!
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Bet you know what I mean!
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